Woodside has moved to quell anti-gas protestors' concerns that it detonated explosives in the water at James Price Point over the weekend.

Opponents of the proposed gas hub, who are camped out near the worksite, took to social media sites describing a series of loud bangs coming from Woodside's offshore barge at about 4:00 am on Saturday.

A Woodside spokesperson says workers were carrying out geo-technical drilling, as they have been for the past six weeks.

The spokesperson says the company did not detonate explosives or do any blasting.